Oil-burner.



PATENTED JULY 21, 1908.

J. SGHURS. OIL BURNER. APPLICATION FILED JUNE 22, 1907;

I tubular projection extending forward to the of thebody lland preferably somenm'rnn srnrns PATIENT enrich.

JOHN soHURs, or Los ANeELEs'cALmoRNIA.

Application filed June 22, 1907. sflh 380,364.

call whom it may concern: 1 Be it known that I, JOHN Son'nns, a citizen of theUnitedStates, residing. at Los Angeles, in the. county ofLos Angeles and State of. .Califor11ia, have invented a new and useful .that is not possible with a pipe burner.

. A further object'of the invention is to ro-- vide for varying the angle or direction o the vide for'varying the injectionaction accordburner. .v

-Another object of the invention is to proto the nature of the' fiame desired.

n the accompanying drawings Figure 1 is a side elevation of the burner.

Fig. 1.

The burner comprises a substantially al casting and provided at the rear, or

-j 'arge r, end with a steam chamber 2 and (iii chamber 3, these chambers being separated by. a diapln'agm or partition 4. A channel or passage 5 extends downwardly from each of these chambers in a lateral enlargement 6 of the body 1 and terminates at its lower end in a tapped opening for the receptionof anell 8 screwing thereinto, the ell at one side being connected to a steam supplypipe 9 4O and the ell at the other side to an Oihsupply pipe 10. The oil chamber-extends from this downward passage inwardly to the center of the body 1, and at. the central portionit has a forward extension formed as a tubular projection 11 from the-partition 4 aforesaid, said outer en what beyond the same, its forward end bein preferably reduced to form a contracted oi the same is connected at its forward end to the outer wall of the body 1 by any desired number of webs or radial arms 13, the body 1, partition 4;, tubular projection 11 and Specification of Letters Patent.

Fig. 2 is a horizontal section on hne ac :c in Fig. 1.- Fig. 3 is a vertical Sel3l0l10ll hnem -w 111' frustoconioal body 1 formed of a single inte-' Webs 13 being all cast integrally so that the rel'ative position thereof is determined permanently, insuring a proper construction and axial alinement at a minimum cost.

The body 1 preferably tapers toward its forward end and the steam chamber 2 within said body and surrounding the tubular extension 11' of the oil chamber also tapersor I converges forwardly. At its forward end the body 1 is screw'threaded at 15 to receive a tip 16 which screws thereon and has a forwardly convergent or tapering bore or passage l7 surrounding the oil outlet 12, this tip passage l7extending somewhat beyond the said oil outlet and then flaring rapidly outward, as shown at 18. To facilitate adjustment, this tip is provided with an arm or handle 19, and may also have a wrench hold 20. The oil. chamber 3 is provided rearwith the forward tubular extension 11, this extension opening at the rear end of the burner and bein r normally closed by a removable screw p ug 22 having a handle 23, sothat by removin said plug the burner maybe opened to a low cleaning of the oil passage and outlet.

By constructing the burner in this manner the rejection 11 is fixed and permanent and can e'boredabsolutely perfect, or in axial alinement with the body 1 so that when the tip 16 is screwed on the body said bore will register with the center of the throat or contracted portion of the tip, whereas, if the projection were separable and had to be screwed into its seat at the rear end it would add to the cost of manufacture and, in'assembling the parts, the least amount of play or looseness between .the'screw threads, which of ne' cessity must exist, would permit of a corresponding movement laterally of the bore from the axial center of the body multiplied as many times as the length of the extension would exceed the length of the radius from the axis of the bore to said screw threads. Actualv experience withscrew threaded fittings has demonstrated that it is impossible to secure them together with suchaccuracy as to avoid a slight displacement of the free end of the extension and it has been found that a displacement of even the sixty-fourth of an inch is sufficient to impair the efiiciency of the burner by forming an uneven flameand a trifle more would substantially de, stroy it. v

The tip 16 .is of such length and the throat wardly with anaxial extension 21 in line p orcontracted portion of itis so related to the flaring walls 17 and 18, that if lines from the walls were extended they would cross each other in the throat. This construction will cause the steam to be converged, or centered, in the throat directly in front of the forward end of the oiloutlet 12, after which it will expand, thereby subjecting the oil to the greatest possible disintegrating eflect of the steam. Owing to the shortness of the tip the slight play or movement that must neces-v sarily occur between the screw threads 15 will not affect the relative position of the throat to the outlet to such an extent as to make any appreciable difference in the flame.

In putting the burner in lace on the oil and-steam supply pi es wit the ells 8, the fittings are made su ciently tight to prevent leakage, but not so tight but that the burner can be moved onthese fittings in both hori: zontal and vertical planes, the motion in a vertical plane being by the two ells turning on the respective pipes 9, 10, and the motion in the horizontal plane being by lateral yielding of the pipes and by slight turning of the body 1 on the ells.

In using. the burner in a brick'kiln the burner will first be tipped downwardly, as shown in dotted lines in Fig. 1, the burner tip being at the same time screwed out so as to leave a rather large steam jet opening or throat at 25, the steam and oil supply being so adjusted, by proper valves, that there is low velocity in the steam jet and a flameof low power, so that the kiln is heated gradually without burning out the brick. Then as the temperature rises and a more intense heat is required, the burner is tipped to position shown in Fig. 1, so as to direct the flame above the brick, the tip being screwed back to'contact the throat and the steam pressure being turned on to give high jet velocity and intense flame.

What I claim is 1. A burner comprising a substantially frusto conical body havin an elongated steam chamber, a non-rotata 1e, tubular ex tension arranged substantially axially therein and rigidly and permanently secured to and projecting beyond the forward end of said body, and forming an 011 chamber, the

plug in the rear end of said bore, and a tip on the forward end, said tip comprising a longi- --tudinally perforated body having a contracted portion and outwardly flaring ends, the rear end being internally screw threaded and the length of the tip and the inclination of the walls of said flaring portions being such that lines extended from said walls; would cross each other at said contracted portion. 2. A burner comprising a body having a steam chamberand an. oil chamber formed therein, the oil chamber having a tubular extension extending forwardly through the steam chamber and terminating in an oil outlet, the steam chamber surrounding the tubular extension of the oil chamber, the walls of said chamber and the tubular extension of the oil chamber being formed integrally with the body, said oil and steam.

chambers having downward extensions, ells screwing 1nto said extensions, 011 and steam supply pipes screwing into sald ells to perm t of angular movement of the burner body on the said su 1y i es, a ti screwing on the end of the lihrn dr body a d having a forwardly convergin passage, the forward tubular extension .0 the oilchamber having a tapering end extending within said tip to form a throat, and said tip having an operating means-for rotating the same to adjust the size ofsaid throat.

In testimony whereof, 'I have hereunto set my hand at Los Angeles, California this 11th day of June 1907. JOHN SCHURS. In presence of ARTHUR P. KNIGHT,

FRANK L. A. GRAHAM. 

